Return-Path: X-Spam-DCC: paranoid 1290; Body=3 Fuz1=3 Fuz2=3 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.4 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_MESSAGE autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id t61MFi9f015399 for ; Thu, 2 Jul 2015 00:15:44 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ZAQEn-0004YQ-BJ for rs_out_1@blacksheep.org; Wed, 01 Jul 2015 23:12:13 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ZAQEm-0004YH-Uy for rsgb_lf_group@blacksheep.org; Wed, 01 Jul 2015 23:12:12 +0100 Received: from nm33-vm8.bullet.mail.bf1.yahoo.com ([72.30.238.198]) by relay1.thorcom.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.85) (envelope-from ) id 1ZAQEk-0006FQ-79 for rsgb_lf_group@blacksheep.org; Wed, 01 Jul 2015 23:12:11 +0100 X-DKIM-Result: Domain=sbcglobal.net Result=Signature OK DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sbcglobal.net; s=s2048; t=1435788728; bh=PSJl8DgwYdAGZ1zen8JBdkLRillMFqjQhqj07uX4HLk=; h=Date:From:Reply-To:To:In-Reply-To:References:Subject:From:Subject; b=b3aFDqDDNWd2OHyPUm3g1tYV+O2gTckhWjYkrjWeBO2ZgHQN4fCFM2CsrLAtPM+FiFoT9vxXR86io+lLVsnRdh2ek31SUk+ZsQN2z3C6e8okIxhGx38WRIgcOjp/BycGn1h41ovSwsxyqybBO8G2e5Nt5hvPFRaQWaz4dbaklWq3t4ZdTec2bg4sE9u4wv3WJy5SWA9Rg5J73ll1VbU6dDv7lIOFm4xfAm37gYgRU5cylm5hWinzWWJrYAGHqieSWzPdnQy6jgl8tk7OyBBWNAqaXFxtSVlbkoseR89ytx46qy7cYAPaWQTyo/38M92syx/cFk7SACRhpk9wre/leA== Received: from [98.139.170.178] by nm33.bullet.mail.bf1.yahoo.com with NNFMP; 01 Jul 2015 22:12:08 -0000 Received: from [98.139.215.248] by tm21.bullet.mail.bf1.yahoo.com with NNFMP; 01 Jul 2015 22:12:07 -0000 Received: from [127.0.0.1] by omp1061.mail.bf1.yahoo.com with NNFMP; 01 Jul 2015 22:12:06 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 991928.43708.bm@omp1061.mail.bf1.yahoo.com X-YMail-OSG: 7DNG6vUVM1lT53bP9x2UTxjqEofKj1KaZa37oxquv4mR9JPgc.7uTaUjhG9WYZK cISIsf5xVpsgQWPkfYhO6SKNkzjyP.i_WQ87DpAY8F7JnnBLGnTAuFJ4tmJ3jjWRObkYLhk3D8A3 2ylCbgbZJVR1mpw..eupvgJaxmCjY_tcuzC4Xw6AZphSOpbe3KHh4Rf4Wnbk6nBKQAwbtrYPwuBx 1mQWiFQLSTtLyXSquBt42VkjxuHea2dYAP2MKQJtKiIW01mZG6XhNGAZF5oJpNW9gK_ZRcpLkyiy 2KL6NvUAl7ML.AlJPJ.ZJ12DW30UEM413_jqv44HvfHkCIzaVhVYJfDdo5nD8nWuHIE4nc8yxfhr ytxclEWYeKX.GLFcdVHTRC2lgWIjP.SKtM5ewUz0BFnri3HtG7KqysQUzd2jSji3CVkVxo.gUlFc v3RkFkl7snxuIXFJDO4aEywDXAxFFpdmxMLAIv4PXJ4nCPtRCLfLmbok9JtmX18PdcFUpvJ0lZWw iPLOzI8EUaTJ6Q0EfMVqoGOd_nXoS Received: by 66.196.80.112; Wed, 01 Jul 2015 22:12:07 +0000 Date: Wed, 1 Jul 2015 22:12:07 +0000 (UTC) From: John Langridge To: "rsgb_lf_group@blacksheep.org" Message-ID: <1339356710.750344.1435788727531.JavaMail.yahoo@mail.yahoo.com> In-Reply-To: <35BE7DE7EDB842989B24FCAAF6B9A9C6@AGB> References: <35BE7DE7EDB842989B24FCAAF6B9A9C6@AGB> MIME-Version: 1.0 X-Scan-Signature: 222431427b0fb799ed82c2c5d7851cd5 Subject: Re: LF: what causes this on wspr Content-Type: multipart/alternative; boundary="----=_Part_750343_1484798107.1435788727521" X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-Scanned-By: MIMEDefang 2.56 on 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 3601 ------=_Part_750343_1484798107.1435788727521 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable >do you=C2=A0 see=C2=A0 this=C2=A0 pattern from=C2=A0 your=C2=A0=C2=A0 SDR = ?=C2=A0=20 When I am transmitting and subsequently overloading the SDR, yes.=C2=A0 It = has similar, regular spaced sidebands away from the center freq.=C2=A0 In f= act, if you go to my QRZ page bio, the topmost picture is a grabber shot of= my WSPR signal signal overloading the SDR along with another WSPR station = about 200 miles north of me.=C2=A0 10w ERP....=C2=A0 the RX antenna at 1 mi= le is a resonant, well match toploaded vertical (about 10m tall) so its swa= mped with signal and does not deal well with it.=C2=A0=C2=A0 This may not be the same situation but it sure looks familiar as overload. 73! John KB5NJD / WG2XIQ From: Graham To: rsgb_lf_group@blacksheep.org=20 Sent: Wednesday, July 1, 2015 1:56 PM Subject: Re: LF: what causes this on wspr =20 Tnx John=C2=A0The over drive=C2=A0 option=C2=A0=C2=A0 has a=C2=A0 flaw ,as = far as I can see ,=C2=A0=C2=A0as=C2=A0 to=C2=A0 where=C2=A0 the=C2=A0 frequ= ency=C2=A0 spacing=C2=A0 of the=C2=A0 side=C2=A0 bands=C2=A0 originates ,= =C2=A0=C2=A0 yes, psk31 , over driven=C2=A0 produce's=C2=A0 IMD=C2=A0 but= =C2=A0 wspr=C2=A0 is a=C2=A0 single=C2=A0 phase cont=C2=A0 tone=C2=A0 syste= m=C2=A0 =C2=A0do you=C2=A0 see=C2=A0 this=C2=A0 pattern from=C2=A0 your=C2= =A0=C2=A0 SDR ?=C2=A0 =C2=A0Tnx- G, From: John Langridge Sent: Wednesday, July 01, 2015 5:37 PMTo: rsgb_lf_grou= p@blacksheep.org Subject: Re: LF: what causes this on wspr Two real options: 1) over driven audio, as your picture caption suggests or 2) the rx site is close to the TX station and is overloading the receiver.= =C2=A0 I have a remote Ensemble II LF SDR at a site 1 mile away from my TX = and I overload it like this regularly but its not because I'm over-driving = my system.=C2=A0 The signal is simply to strong for that distance and the r= eceiver is in an overload condition. 73! John KB5NJD / WG2XIQ From: Graham To: rsgb_lf_group@blacksheep.org=20 Sent: Wednesday, July 1, 2015 11:24 AM Subject: LF: what causes this on wspr=20 #yiv3082640892 #yiv3082640892 -- .yiv3082640892ygrp-photo-title{clear:both;= font-size:smaller;height:15px;overflow:hidden;text-align:center;width:75px;= }#yiv3082640892 div.yiv3082640892ygrp-photo{background-position:center;back= ground-repeat:no-repeat;background-color:white;border:1px solid black;heigh= t:62px;width:62px;}#yiv3082640892 div.yiv3082640892photo-title a, #yiv30826= 40892 div.yiv3082640892photo-title a:active, #yiv3082640892 div.yiv30826408= 92photo-title a:hover, #yiv3082640892 div.yiv3082640892photo-title a:visite= d {text-decoration:none;}#yiv3082640892 div.yiv3082640892attach-table div.y= iv3082640892attach-row {clear:both;}#yiv3082640892 div.yiv3082640892attach-= table div.yiv3082640892attach-row div {float:left;}#yiv3082640892 p {clear:= both;padding:15px 0 3px 0;overflow:hidden;}#yiv3082640892 div.yiv3082640892= ygrp-file {width:30px;}#yiv3082640892 div.yiv3082640892attach-table div.yiv= 3082640892attach-row div div a {text-decoration:none;}#yiv3082640892 div.yi= v3082640892attach-table div.yiv3082640892attach-row div div span {font-weig= ht:normal;}#yiv3082640892 div.yiv3082640892ygrp-file-title {font-weight:bol= d;}#yiv3082640892 #yiv3082640892 #yiv3082640892 -- #yiv3082640892ygrp-mkp {= border:1px solid #d8d8d8;font-family:Arial;margin:10px 0;padding:0 10px;}#y= iv3082640892 #yiv3082640892ygrp-mkp hr {border:1px solid #d8d8d8;}#yiv30826= 40892 #yiv3082640892ygrp-mkp #yiv3082640892hd {color:#628c2a;font-size:85%;= font-weight:700;line-height:122%;margin:10px 0;}#yiv3082640892 #yiv30826408= 92ygrp-mkp #yiv3082640892ads {margin-bottom:10px;}#yiv3082640892 #yiv308264= 0892ygrp-mkp .yiv3082640892ad {padding:0 0;}#yiv3082640892 #yiv3082640892yg= rp-mkp .yiv3082640892ad p {margin:0;}#yiv3082640892 #yiv3082640892ygrp-mkp = .yiv3082640892ad a {color:#0000ff;text-decoration:none;}#yiv3082640892 what= causes this=C2=A0 on wspr =C2=A0This=C2=A0 takes=C2=A0 some=C2=A0 doing=C2= =A0 ...... but=C2=A0 how=C2=A0 to=C2=A0 do=C2=A0 it=C2=A0 ?=C2=A0G, ------=_Part_750343_1484798107.1435788727521 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
>do you = see  this  pattern from  your   SDR=20 ? 

When I am transmitting and subsequently overloadi= ng the SDR, yes.  It has similar, regular spaced sidebands away from t= he center freq.  In fact, if you go to my QRZ page bio, the topmost pi= cture is a grabber shot of my WSPR signal signal overloading the SDR along = with another WSPR station about 200 miles north of me.  10w ERP....&nb= sp; the RX antenna at 1 mile is a resonant, well match toploaded vertical (= about 10m tall) so its swamped with signal and does not deal well with it.&= nbsp; 

This may not b= e the same situation but it sure looks familiar as overload.

73!

John KB5NJD / WG2XIQ

<= div style=3D"font-family: HelveticaNeue-Light, Helvetica Neue Light, Helvet= ica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <= div style=3D"font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, = Lucida Grande, sans-serif; font-size: 16px;">
From: Graham <g8fzk@g8fzk.fsnet.co.uk>
To: rsgb_lf_group@blacksheep.org
Sent: Wednesday, July 1, 201= 5 1:56 PM
Subject: Re:= LF: what causes this on wspr

Tnx John
 
The over drive  option   has a  flaw ,as far as I = can=20 see ,  as  to  where  the  frequency =20 spacing  of the  side  bands  originates ,   = yes,=20 psk31 , over driven  produce's  IMD  but  wspr  is= =20 a  single  phase cont  tone  system 
 
do you  see  this  pattern from  your   = SDR=20 ? 
 
Tnx- G,



From: John Langridge
Sent: Wednesday, July 01, 2015 5:37 PM
Subject: Re: LF: what causes this on wspr

Two real options:

1) over driven audio, as your picture caption suggests

or

2) the= rx site is close to the=20 TX station and is overloading the receiver.  I have a remote Ensemble = II LF=20 SDR at a site 1 mile away from my TX and I overload it like this regularly = but=20 its not because I'm over-driving my system.  The signal is simply to s= trong=20 for that distance and the receiver is in an overload condition.

73!

John KB5NJD / WG2XIQ

From:<= /span>=20 Graham <g8fzk@g8fzk.fsnet.co.uk>
To: rsgb_lf_group@blacksheep.org=20
Sent: We= dnesday, July 1, 2015=20 11:24 AM
Subject: LF: what=20 causes this on wspr

what causes this  on wspr
 
This  takes  some  doing  ...... but  how&nbs= p;=20 to  do  it  ?
 
G,


=


------=_Part_750343_1484798107.1435788727521--